Side bearing for cars.



PATENTED FEB. 3, 1903.

J. E. nonwoon. sum BEARING FOR (mas.

APPLICATION FILED APB. 14, 1902.

N0 MODEL.

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NlTED STATES PATENT FFICE.

JOHN E. NORWOOD, OF BALTIMORE, MARYLAND, ASSIGNOR TO BALTIMORE BALLBEARING 00., OF BALTIMOREpM'ARYLAND, A CORPORATION OF MARYLAND.

SIDE BEARING FOR CARS.

SPECIFICATION forming part of Letters Patent No. 719,952, dated February3, 1903.

Application filed April 14, 1902. Serial No. 102,866. (No model.)

To all whom it may concern:

Be it known that 1, JOHN NoRWooD, a citizen of the United States,residing at Baltimore, in the State of Maryland, have in- 5 ventedcertain new and useful Improvements in Side Bearings for Cars; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichI it appertains to make and use the same.

This invention relates to side bearings for railway-cars, and moreparticularly to the class of roller-bearings; and it has for its objectto provide a construction wherein an ef- I fective number ofbearing-balls will at all times lie between the bearing-plates or racesto sustain the body of the cars and in which the balls will have a freebodily movement and will automatically return to their normal positionswhen pressure is removed from them.

A further object of the invention is to provide as an article ofmanufacture such a structure as may be manufactured at a minimum cost,which will include but few parts,

and in which the parts will be held securely from loosening.

Other objects and advantages of the invention will be understood fromthe following description.

In the drawings forming a portion of this specification, and in whichlike numerals of referenceindicate similar parts in the several Views,Figure 1 is a central longitudinal section taken vertically through boththe upper and lower castings of a side bearing embodying the presentinvention. Fig. 2 is a section on line 2 2 of Fig. 1. of the uppercasing, the bearing or race plate being indicated in dotted lines. Fig.4: is a Vertical section through one end portion of the upper casing andshowing the employment of seal for holding the plug in place.

Referring now to the drawings, the present bearing comprises an uppercasting 5 and a lower casting 6, which are adapted for attachment to thebody and truck bolsters, respectively, of a car through the medium ofbolts engaged through the perforated ears 7 and 8, respectively. Thecasting 5 has a ball-passage formed therein and which ball-passage Fig.3 is a top plan view comprises a central straight portion 9, having aslot 10 in its lower side through which the bearing-balls 11 project,the side walls 12 and 13 of the passage being concave to partly receivethe balls, the width of the slot 10 being less than the diameter of aball, so that the balls are prevented from dropping out of theball-passage. The ball-passage comprises also upwardly-directed tubularend portions 14 and 15, which curve gradually from the central portion 9of the passage, so that the bottom walls of said extensions areinclined. With this construction a ball may be moved from the straightportion of the ball-passage into the inclined end portion and whenreleased will return by gravity from the inclined portion to thestraight or horizontal portion. To permit of application of thebearing-balls to the ball-passage, an opening 16 is formed through theupper wall and a part of the end wall of the extension 15 of thepassage, and the balls are dropped through this opening, after which ametal plug 17 is engaged in the opening to prevent passage of the ballsout through the opening. At the sides of the opening 16 are ears 16, andafter the plug 17 is engaged in the opening 16 these ears are bent downupon the plug to prevent displacement thereof. When the balls are to beremoved, the ears are bent back and the plug withdrawn. The

plug has a flange at its upper end which cngages in the countersink atthe upper end of the opening 16 to prevent the plug from dropping downinto the ball-passage. It will be noted that when a ball reaches the endof the portion 15 of the passage it has a bearing against the hard metalof the end of the passage and not against the plug, so that the latteris not forced out. In the upper wall of the portion 9 of theball-passage is formed a cross-sectionally angular socket or seat 18, in

which is disposed the upper arc-shape bearing or race plate 19, and intheupper wall of this socket or seat are perforations 20, countersunk atthe upper end, and in which perforations areengaged the headed stems 21,formed upon the plate 19. The stems 21 are of less diameter than theperforations 20 to permit of the casting of a seal 22 around each stemto hold the latter in its perforation. In

this construction of the upper member of the side bearings the entireball-casing is cast integral and the hearing or race plate is attachedwithout the use of bolts or screws, that are liable to loosen, while atthe same time it is held securely.

In the lower casting 6 is formed a longitudinal slot or seat 23, inwhich is disposed the bearing or race plate 24.

The castingsin the present construction are preferably made of malleableiron, while the balls and bearing or race plates are of hard steel, thebearing-faces of said plates being preferably arc-shaped incross-section, so as to give increased bearing-surfaces for the ballsand overcome lateral motion.

It will be understood that in practice modifications of the specificconstruction shown may be made and that any suitable materials andproportions may be used without departing from the spirit of theinvention.

In Fig. 4: of the drawings there is shown a modification wherein theplug 17 has a recess 30 in one side which receives the finger 31 of thecasing, below which recess is a finger 32, which lies against the innerface of the ballpassage to prevent outward movement of this portion ofthe plug. The opposite edge of the plug has a recess 33, while theadjacent wall of the opening 34, in which the plug is inserted, has arecess 35, and into the recesses 33 and 35 is cast metal 36 to hold theplug in position. By means of this seal wabbling of the plug isprevented and it is held securely in place under all conditions.

What is claimed is 1. In a bearing for cars, an upper bearingcasingformed integral and having a hall-passage, the ends of which are closed,balls disposed in the passage, said casing having a slot leading to thepassage between the ends of the latter and through which the ballsproject, the casing having an opening leading to one end portion of theball-passage out of line of the balls in action.

2. In a bearing for cars, a casing formed integral and having aball-passage which is slot ted in its under side and the end portions ofwhich are closed and inclined, and balls held within the passage andprojecting through the slot, said casing having an opening leadingthrough the upper wall of an inclined end portion of the passage forinsertion of the balls, said opening being out of line of the movementof the balls in action.

3. A side bearing for car-trucks comprising an upper casing having abearing-face and balls disposed in operative relation to thebearing-face, said casing having separate closed-ended passages at theends of the bearing-face to receive balls successively when moved fromthe bearing-face, said passages being inclined to discharge the ballsinto operative relation to the bearing-face.

4. A side bearin g for car-trucks comprising an upper casing having abearing-face and balls disposed in operative relation to thebearing-face, said casing having separate closed-ended passages at theends of the bearing-face to receive balls successively when moved fromthe bearing-face, said passages being inclined to discharge the ballsinto 0perative relation to the bearing-face, the casing having anopening leading to an inclined end portion of the passage through theupper wall thereof for insertion of balls.

5. In an upper bearing,aball-casing formed integral and having a slottedball-passage having closed ends and in which the balls are held andthrough which slot the balls project, said passage having an openingthrough which the balls may be introduced, the opening being out of theline of movement of the balls in action.

6. In a bearing, the combination with an upper bearing-casing having aperforation therein of a bearing plate having a stem passed upwardlythrough the perforation and grooved, the perforation adjacent to thegrooved portion of the stem being increased in diameter, and a soft-metal seal cast into the groove and the adjacent portion of theperforation whereby the bearing-plate is suspended.

7. In abearing the combination with an upper bearing-casing having asocket in its under side of a bearing-plate disposed in the socket and asoft-metal seal engaged with the casing and a portion of thebearing-plate for holding the latter in the socket.

8. In a bearing the combination with a bearing-plate having a stem, ofan attaching device having a perforation therethrough in which the stemis inserted and a soft seal passed in engagement with the stem and theattaching device, said stem being exposed at its free end to permit ofapplication of a tool for driving the stem from the perforation.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN E. NORVVOOD. Witnesses:

BRUCE B. GooTEE, WM. D. ALLEN.

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